| 摘要 |
<p>Roller 12, which can be used to support glass in treatment apparatus, such as a tempering oven, and to progress the glass without creating a bloom thereon has a surface coating 32, 34 thereon consisting of aluminium oxide 99% to 90% and titanium oxide 1% to 10%, conveniently applied as two layers by flame spraying and preferably with a two layer flame-sprayed intermediate coating 28, 30 of nickel/chrome alloy. <IMAGE></p> |
